batgrbproduct Analysis for Trigger=704444
Analysis Summary
Notes:
- 1) No attempt has been made to eliminate the non-significant decimal places.
- 2) This batgrbproduct analysis is done of the amount of data for this trigger downloaded to date.
- 3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.
- 4) This page will be updated for up to 10 downlinks after the trigger.
======================================================================
BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time (local time): Fri Jul 15 22:44:03 EDT 2016
Host Name: bat1
Current Working Dir: /local/data/bat1/prebascript/trigger704444/GCN5_download_cron
======================================================================
Trigger: 00704444 Segment: 000
BAT Trigger Time: 490237344 [s; MET]
Trigger Stop: 490237408 [s; MET]
UTC: 2016-07-15T01:02:07.438880 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 193.77437969534 Dec: 13.1450733592021 [deg; J2000]
Catalogged Source?: YES
Point Source?: YES
GRB Indicated?: NO [ by BAT flight software ]
Image S/N Ratio: 5.96
Image Trigger?: YES
Rate S/N Ratio: 0 [ if not an image trigger ]
Image S/N Ratio: 5.96
Flight Position: [ source = BAT ]
RA: 193.77437969534 Dec: 13.1450733592021 [deg; J2000]
Ground Position: [ source = BAT pre-slew burst ]
RA: 193.72598924825 Dec: 13.2546115231444 [deg; J2000]
{ 12h 54m 54.2s , +13d 15' 16.6" }
+/- 4.66702462362879 [arcmin] (estimated 90% radius based on SNR)
+/- 3.58009297749131 [arcmin] (formal 1-sigma fit error)
SNR: 3.36780408671857
Angular difference between Flight and Ground position is 7.154392 arcmin
Partial Coding Fraction: 1 [ including projection effects ]
Duration
T90: 64 +/-
Measured from: 0
to: 64 [s; relative to TRIGTIME]
T50: 64 +/-
Measured from: 0
to: 64 [s; relative to TRIGTIME]
WARNING: battblocks failed. Used TDRSS fore/background intervals
Fluence
Peak Flux (peak 64 second)
Measured from: 0
to: 64 [s; relative to TRIGTIME]
Total Fluence
Measured from: 0
to: 64 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.125512 0.175559 -0.040671 0.023372
0.042837 0.044378 0.039605 0.037334 [error]
Peak 0.125512 0.175559 -0.040671 0.023372
0.042837 0.044378 0.039605 0.037334 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
=== Fluence/Peak Flux Summary ===
Model Band1 Band2 Band3 Band4 Band5 Total
15-25 25-50 50-100 100-350 15-150 15-350 keV
Fluence Power-law 3.83e-08 4.00e-08 2.96e-08 3.54e-08 1.21e-07 1.47e-07 erg/cm2
Error 1.73e-08 1.97e-08 3.00e-08 6.51e-08 6.65e-08 1.06e-07 erg/cm2
Peak flux Power-law 1.96e-02 1.15e-02 4.29e-03 2.12e-03 3.65e-02 3.75e-02 ph/cm2/s
Error 9.01e-03 5.49e-03 4.20e-03 3.52e-03 1.55e-02 1.63e-02 ph/cm2/s
Fluence Cutoff-PL 3.39e-08 6.97e-08 2.28e-09 1.17e-14 1.06e-07 1.06e-07 erg/cm2
Error 1.95e-08 3.14e-08 1.05e-08 2.09e-10 4.02e-08 4.02e-08 erg/cm2
Peak flux Cutoff-PL 1.60e-02 2.10e-02 4.07e-04 1.11e-09 3.75e-02 3.75e-02 ph/cm2/s
Error 9.78e-03 8.82e-03 1.70e-03 1.86e-05 1.37e-02 1.37e-02 ph/cm2/s
Fluence Band -------- -------- -------- -------- -------- -------- erg/cm2
Error -------- -------- -------- -------- -------- -------- erg/cm2
Peak flux Band -------- -------- -------- -------- -------- -------- ph/cm2/s
Error -------- -------- -------- -------- -------- -------- ph/cm2/s
=== Time-averaged spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 2.451 0.820 - - 1.91e-04 1.28e-04 60.340 57
CPL -8.884 -0.440 29.3 5.0 9.84e+03 3.92e+04 52.880 56
=== 1-s peak spectral analysis ===
Model Ph_index Ph_90err Epeak Epeak_90err Norm Nomr_90err chi2 dof
PL 2.451 0.820 - - 1.91e-04 1.28e-04 60.340 57
CPL -8.884 -0.440 29.3 5.0 9.84e+03 3.92e+04 52.880 56
Model : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index : photon index: E^-{Ph_index} (minus sign is not included in the index)
Ph_90err : 90% error of the photon index
Epeak : Epeak in keV
Epeak_90err: 90% error of Epeak
Norm : normalization at 50 keV in PL model and at 1 keV in CPL model
Nomr_90err : 90% error of the normalization
chi2 : Chi-Squared
dof : degree of freedom
=== T90/T50 calculation in the 50-300 keV band (BATSE band) using 64 ms lc ===
T90 in the 50-300 keV band: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
=== Table of the duration information ==
Value tstart tstop
T100 64.000 0.000 64.000
T90 64.000 0.000 64.000
T50 64.000 0.000 64.000
Peak 64.000 0.000 64.000
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
193.7260 +13.2546 0.0570 19.0 -14.7 0.2961 3.4 TRIG_00704444
------------------------------------------
Foreground time interval of the image:
0.000 64.000 (delta_t = 64.000 [sec])
Background time interval of the image:
Lightcurves
Notes:
- 1) All plots contain as much data as has been downloaded to date.
- 2) The mask-weighted light curves are using the flight position.
- 3) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
- 4) For all the mask-weighted lightcurves, the y-axis units are counts/sec/det where a det is 0.4 x 0.4 = 0.16 sq cm.
- 5) The verticle lines correspond to following: green dotted lines are T50 interval, black dotted lines are T90 interval, blue solid line(s) is a spacecraft slew start time, and orange solid line(s) is a spacecraft slew end time.
- 6) Time of each bin is in the middle of the bin.
1 s binning
From T0-310 s to T0+310 s
From T100_start - 20 s to T100_end + 30 s
Full time interval
64 ms binning
Full time interval
From T100_start to T100_end
From T0-5 sec to T0+5 sec
16 ms binning
From T100_start-5 s to T100_start+5 s
8 ms binning
From T100_start-3 s to T100_start+3 s
2 ms binning
From T100_start-1 s to T100_start+1 s
SN=5 or 10 sec. binning (whichever binning is satisfied first)
SN=5 or 10 sec. binning (T < 200 sec)
Spectra
Notes:
- 1) The fitting includes the systematic errors.
- 2) For long bursts, a spectral fit of the pre-slew DRM will introduce some errors in both a spectral shape and a normalization if the PHA file contains a lot of the slew/post-slew time interval.
- 3) For fits to more complicated models (e.g. a power-law over a cutoff power-law), the BAT team has decided to require a chi-square improvement of more than 6 for each extra dof.
- 4) For short bursts (T90<1sec), the specrtum is also fit with Blackbody, OTTB, and Double Blackbody.
Time averaged spectrum fit using the pre-slew DRM
Power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.45128 ( -0.678869 0.961123 )
Norm@50keV : 1.90889E-04 ( -0.000119762 0.000137177 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.34 using 59 PHA bins.
# Reduced chi-squared = 1.059 for 57 degrees of freedom
# Null hypothesis probability = 3.559421e-01
Photon flux (15-150 keV) in 64 sec: 3.65471E-02 ( -0.01542 0.0156154 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.21482e-07 ( -6.09731e-08 7.19782e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -8.88394 ( 8.89617 8.01532 )
Epeak [keV] : 29.3351 ( -4.57081 5.51354 )
Norm@50keV : 9837.96 ( -10342.2 68079.1 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.88 using 59 PHA bins.
# Reduced chi-squared = 0.9442 for 56 degrees of freedom
# Null hypothesis probability = 5.938069e-01
Photon flux (15-150 keV) in 64 sec: 3.74688E-02 ( -0.0130414 0.0143861 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.05916e-07 ( -3.75046e-08 4.29914e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -4.49739 -5 )
beta : -10.0000 ( 10 10 )
Epeak [keV] : 29.3419 ( -5.38548 6.23216 )
Norm@50keV : 22.2939 ( -7.69468 64.1196 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.31 using 59 PHA bins.
# Reduced chi-squared = 0.9693 for 55 degrees of freedom
# Null hypothesis probability = 5.392821e-01
Photon flux (15-150 keV) in 64 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 7.25691 (-1.82235 2.31015)
R^2/D10^2 : 7.30262E-02 (-0.0723827 0.153067)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.86 using 59 PHA bins.
# Reduced chi-squared = 0.9625 for 57 degrees of freedom
# Null hypothesis probability = 5.557953e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.098e-08 2.557e-08
25- 50 6.013e-08 3.936e-08
50-150 1.133e-08 1.051e-08
15-150 1.124e-07 7.379e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 27.3321 (-15.5692 43.3213)
Norm : 0.333216 (-0.178631 0.349525)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.28 using 59 PHA bins.
# Reduced chi-squared = 1.023 for 57 degrees of freedom
# Null hypothesis probability = 4.279444e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.125e-08 2.609e-08
25- 50 4.468e-08 2.988e-08
50-150 2.158e-08 2.324e-08
15-150 1.075e-07 7.578e-08
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 1.01152E-04 (6.38113e-06 -0.000101152)
R1^2/D10^2 : 0.974973 (-0.975071 -0.975071)
kT2 [keV] : 7.27501 (-1.80939 2.32393)
R2^2/D10^2 : 7.23905E-02 (-0.0721244 0.153321)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.88 using 59 PHA bins.
#Fit statistic : Chi-Squared = 54.86 using 59 PHA bins.
# Reduced chi-squared = 0.9977 for 55 degrees of freedom
# Reduced chi-squared = 0.9974 for 55 degrees of freedom
# Null hypothesis probability = 4.793425e-01
# Null hypothesis probability = 4.799737e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.013e-08 4.214e-03
25- 50 6.140e-08 4.067e-02
50-150 1.254e-08 9.162e-01
15-150 1.141e-07 1.028e+00
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 2.45128 ( -0.678869 0.961123 )
Norm@50keV : 1.90889E-04 ( -0.000119762 0.000137177 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 60.34 using 59 PHA bins.
# Reduced chi-squared = 1.059 for 57 degrees of freedom
# Null hypothesis probability = 3.559421e-01
Photon flux (15-150 keV) in 64 sec: 3.65471E-02 ( -0.01542 0.0156154 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.21482e-07 ( -6.09731e-08 7.19782e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -8.88394 ( 8.89617 8.01532 )
Epeak [keV] : 29.3351 ( -4.57081 5.51354 )
Norm@50keV : 9837.96 ( -10342.2 68079.1 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 52.88 using 59 PHA bins.
# Reduced chi-squared = 0.9442 for 56 degrees of freedom
# Null hypothesis probability = 5.938069e-01
Photon flux (15-150 keV) in 64 sec: 3.74688E-02 ( -0.0130414 0.0143861 ) ph/cm2/s
Energy fluence (15-150 keV) : 1.05916e-07 ( -3.75046e-08 4.29914e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 5.00000 ( -4.49739 -5 )
beta : -10.0000 ( 10 10 )
Epeak [keV] : 29.3419 ( -5.38548 6.23216 )
Norm@50keV : 22.2939 ( -7.69468 64.1196 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 53.31 using 59 PHA bins.
# Reduced chi-squared = 0.9693 for 55 degrees of freedom
# Null hypothesis probability = 5.392821e-01
Photon flux (15-150 keV) in 64 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 7.25691 (-1.82235 2.31015)
R^2/D10^2 : 7.30262E-02 (-0.0723827 0.153067)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.86 using 59 PHA bins.
# Reduced chi-squared = 0.9625 for 57 degrees of freedom
# Null hypothesis probability = 5.557953e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.098e-08 2.442e-08
25- 50 6.013e-08 3.942e-08
50-150 1.133e-08 1.032e-08
15-150 1.124e-07 7.245e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 27.3321 (-15.5692 43.3213)
Norm : 0.333216 (-0.178631 0.349525)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 58.28 using 59 PHA bins.
# Reduced chi-squared = 1.023 for 57 degrees of freedom
# Null hypothesis probability = 4.279444e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.125e-08 2.608e-08
25- 50 4.468e-08 3.064e-08
50-150 2.158e-08 2.320e-08
15-150 1.075e-07 7.686e-08
Double BB
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 1.01152E-04 (6.38113e-06 -0.000101152)
R1^2/D10^2 : 0.974973 (-0.975071 -0.975071)
kT2 [keV] : 7.27501 (-1.80939 2.32393)
R2^2/D10^2 : 7.23905E-02 (-0.0721244 0.153321)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 54.88 using 59 PHA bins.
#Fit statistic : Chi-Squared = 54.86 using 59 PHA bins.
# Reduced chi-squared = 0.9977 for 55 degrees of freedom
# Reduced chi-squared = 0.9974 for 55 degrees of freedom
# Null hypothesis probability = 4.793425e-01
# Null hypothesis probability = 4.799737e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.013e-08 4.448e-03
25- 50 6.140e-08 3.587e-02
50-150 1.254e-08 8.234e-01
15-150 1.141e-07 9.558e-01
Plot creation:
Fri Jul 15 22:48:35 EDT 2016